Learning about the Internet

Internet technology is advancing so fast and web marketing is becoming so advanced that it is difficult to know how to keep up.

I am starting a list of questions I am trying to answer to see if my learning can grow:

1. Is it possible to optimize a website which can be found by video and image search, in addition to traditional text-based search? It sounds cool but is it no more than few tag lines embedded in the HTML code surrounding the video or audio clip?
2. What is Google's Universal Search 2.0?
3. How to you optimize a web site to be found by local search engines?
4. How to you optimize it so that it can located through map services?
5. How do you ensure higher search ranking on the search engines such as Google etc.
6. What is tag based search?
7. What is blog-specific search?
8. How can you submit site to all the search engines in the US/Canada?
9. What are the niche-specific forums and blog communities relevant to us?
10. Is there a thing called - Electronic press release distribution to general search engines, news search engines, blog search engines, tag-based search engines, syndication networks, XML feeds etc?
11. What are XML feeds anyhow?
12. Can one use blog to increase interaction between management and customers?